Alvin f



(No Model.)

A. F. KEENE.

HEATING DRUM.

"HIM Patented Dec. 25, 1888.

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ALVIN F. KEENE, OF MONTICELLO, MINNESOTA, ASSIGNOR ()F ONE-HALF TO HARRY HOLLER, OF SAME PLACE.

HEATlNG-DRUM.

SPECIFICATION forming part of Letters Patent No. 395,280, dated December 25, 1888.

Application filed December 14, 1887. Serial No. 257,889. {No model.)

To alZZ whom it may concern.-

Be it known that I, ALVIN F. KEENE, a citizen of the United States, residing at Monticello, in the county of right and State of Minnesota, have invented a new and useful Improvement in Heating-Drums, of which the following is a specification.

My invention relates to improvements in heating-drums; and it consists in a certain novel construction and arrangement of parts, which is hereinafter fully described and claimed.

The object of the invention is to provide a simple, inexpensive, and easily-operated device by which the escape of the heat up the flue may be regulated.

The improved drum by which I accomplish this object is provided with a series of valves which are operated simultaneously by means of a handle 011 the outside of the drum. These valves may be either entirely closed, thereby causing the products of combustion to pass through annular openings between the edges of the valve-seats and the sides of the casing or body of thedrum, or entirely open, thereby allowing a direct passage of the products up the flue, or partially open at any point between these two extremes. The valves consi st of horizontal plates arranged transyersely in the drum-body and having aligned central apertures and val vedisks over the said central. apertures and adapted to close the same when lowered. The edges of the apertured plates are held a small. distance from the sides of the body, thereby forming annular openings, through which. the smoke, &c., must pass when the valves are closed.

The details of construction are hereinafter more fully described, in connection with the accompanying drawings, wherein- Figure 1 is a side view of the drum. Fig. 2 is a vertical section taken centrally of the same. Fig. 3 is a detail perspective view of the removable frame having the apertured plates and the valve-disks. Fig. e is a similar view of one of the rods which connect the apertured plates. Fig. 5 is a similar view of one of the rods which connect the valve-disks Referring by letter to the drawings, A designates the outer casing or body of the drum,

which is cylindrical in form and of a greater diameterthan the pipe to which it is to be applied. The lower end of the body is provided with a collar, B, to engage over the end of the stovepipe, and the upper end of the body is provided with a removable cap, 0, having a collar, D, to pass within the end of the portion of stove-pipe above the drum. The collar 1) is provided at one side with a vertical slot, E, having a series of three or more notches, F F, at the side, and on the opposite side it is provided with a bearing, G, for a purpose to be described.

II represents a removable frame, which is disposed in the body of the drum, and it comprises the horizontal plates J (three or more in number) and the connectingrods K at the sides of the plates. There are preferably three of these rods, and they are each provided with a number of notches, k, equal to the number of plates J, and the edges of the said plates are engaged therein. The plates are provided with central aligned apertures, L. This frame is arranged in the body of the drum, and is held in place by its frictional contact with the sides of the drum, and the plates J are thus rigidly secured at the desired intervals in the casing or body. The central apertures .in the plates align with the openings in the collars l3 and 0.

ill M represent the valve-disks of a number equal to the number of apertured plates, the

said disks being arranged above the plates,

so that when they are lowered they will close the apertures in the plates. flhese apertured plates are analogous to valve seats. The valvedisks M are provided with perforations m on, through which are passed the rods N, which are provided with shoulders or notches n n to engage the disks and maintain them at the same relative distances apart as the apertured plates or valve-seats. A lift-ingrod, 0, having a ring, P, on its upper end, is attached to the center of the upper val ve-disk, and a transverse adjusting-rod, R, is mounted at its ends in the bearing G and the slot E in the collar D. The end of the rod which is adjacent to the slot is provided with a handle or hold, S, of any preferred form.

The operation of the invention will be readily seen from the foregoing description to be as follows: When it is desired to abstract as much heat as possible from the products of combustion which pass up the flue, the valves are closed by adjusting the rod R in the lower end of the slot E. In this position of the valves the smoke, gases, &c., are forced to pass through the annular openings T around the edges of the apertured plates. These openings are between the edges of the plates and the sides of the casing or drum and consequently the products of combustion (which are greatly heated) are brought into intimate contact with the sides or radiating-surface of the drum. Much of the heat of the said products is thus absorbed and radiated into the space around the drum.

If it is desired to allow as free a passage for draft as possible, the valves are opened by engaging the adjusting-rod in the upper notch, F. No obstruction is then offered to the direct escape of the products of combustion. The intermediate notches F are employed to arrange the valves at intermediate points between, entirely closed and entirely open to enable the amount of radiated heat to be regula'ted at will.

The advantages of this drum are that it is simple in construction and operation, it may be attached to an ordinary stove-pipe without any previous preparation of either, and all of its parts are detachable, it being simply necessary to remove the cap 0 to enable the entire operating mechanism to be removed. This latter feature is of particular importance from the fact the parts are readily cleaned when they become coated with partially-burned material. In devices of this kind there is always a collection of soot and dust, due, first, to the obstruction which is offered to the direct escape of the'smoke and other products, and, second, to the abstraction from the smoke of the heat without which the particles of unburned material cannotbe carried. Therefore, as the smoke in passing through the annular openings in the drum becomes cooled it deposits soot on' the sides of the casing and the apertured plates, and this coating not only interferes with the operation of the valves, but, being a non-conductin g material, it, in a measure, if not entirely, insulates the metal of the casing and prevents it from absorbing the heat. The result of this is that the drum becomes useless.

It will be seen that if there was no provision for cleaning the drum (as is the case with manycomplicated devices) it would in time become worse than useless, for it would interfere with the draft of the fire. In the improved drum, however, it will be seen that provision is made for overcoming this difficulty by so constructing the parts that they may be detached from each other and from the casing or body of the drum and cleaned.

Having thus described the invention, I

1. In a heating=drum, the body or casing A, in combination with the frame ll, arranged therein, and comprising the plate J, arranged horizontally in the body or casing, and provided with central apertures, L, the said plates being slightly smaller in diameter than the body or casing, and the vertical bars K, having notches 7c 70, engaging the edges of the plates J, and bearing at their outer sides against the sides of the body or casing, whereby the frictional contact therewith holds the frame H in place in the body or casing, and the valves arranged adjacent to the openings L, substantially as and for the purpose specified.

2. In a heating-drum, the combination, with the body or casing A, of the removable frame ll, having the parallel apertured plates J, and the vertical rods K, provided with notches to receive the edges of the plates, the valvedisks M, arranged above the apertured plates and having aligned perforations m therein, and the rods N, engaging said perforations and thereby connecting the valve-disks together for simultaneous operation, substantially as specified.

3. In a drum, the combination, with the casing or body A, having the lower collar, B, and the upper collar, D, provided with a vertical slot, E, having notches F, communicating therewith, and the bearing G on the opposite side of the collar, of the adjusting-rod R, mounted in the said slot and bearing and adapted to be engaged in the notches, the apertured plates arranged in. the body or casing, the valve-disks disposed above the apertures and connected together for simultaneous operation, and the lifting-rod 0, connecting the upper disk to an intermediate point of the adj usting-rod, substantially as specified.

i. In a heating-drum, the combination of the outer casing or body, A, having the lower collar, B, the removable cap 0 on the upper end of the casing or body, and having the collar D, provided with a notched slot, E, on one side, the removable frame H, arranged in the casing or body, and having the plates J J, provided with central apertures, and a11- nular openings T, the valve-disks arranged over the said central apertures and connected together, and the transverse adjusting-rod R, arranged at one end in the notched slot and connected. at an intermediate point to the upper valve-disk, substantially as and for the purpose specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

ALVIN F. KEENE.

\Vitnesses:

A. O. RIGGS, MoonY A. BAILEY. 

